Hello,
Recently I’ve changed factions from the Alliance to the Horde to play with my friends but I noticed that the equivalent title I had “The Horde Slayer” was removed from the character.
So I Googled it and read this post and it states the following:
You can earn the “slayer” title again in the new faction by completing the quest to kill 10 players of the opposite faction while being hunted — without dying.
The question is whether you can still earn this title in Shadowlands as long as you have the achievement? I believe you can’t which is a shame because the achievement [The Alliance Slayer] is right there and even states that it was earned by this character so why not the title? in the same post I linked above I read it’s intended but this was probably written in the context of BfA and not Shadowlands and dunno now that you can’t earn the title again it feels like a bug than anything but intended.